[ABrandt]

Congrats on getting something up and running! Now the hard part...iteration.

Right now you have the feeble skeleton of what could make money. As you try and turn this into a business, don't try to just layer on premium features. For example, arbitrarily adding paid usage limits probably won't work in its current state. Build it into a business. Let your app grow. Stretch it and pull it in all sorts of directions until you have something people want badly enough that they'll pay--aka achieve product/market fit.

With that aside, I think you need to identify a particular use case for this technology. Is it for personal note taking? Relaying secret information to a third-party? Playing a global game of 'telephone'[1]? You can't find paying customers until you know what they'll use it for.

-- [1]http://en.wikipedia.org/wiki/Telephone_game